added function to update CMS fields
added function to update CMS fields

icecaster/advancedworkflow,silverstripe-terraformers/advancedworkflow,dnadesign/advancedworkflow,silverstripe-australia/silverstripe-advancedworkflow,silverstripe-australia/advancedworkflow,silverstripe-australia/advancedworkflow,icecaster/advancedworkflow,Internetrix/advancedworkflow,dnadesign/advancedworkflow,silverstripe-terraformers/advancedworkflow,silverstripe-australia/silverstripe-advancedworkflow,Internetrix/advancedworkflow